封隔震荡洗井新技术在水文地质勘查中的应用研究
Application of the new technology of well-flushing with parker to hydrogeological exploration
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摘要: 封隔震荡洗井新技术大大提高了洗井质量和效率。针对传统洗井方法耗时长、效果差，且对大厚度含水层不能彻底洗净的问题，实践探索出新的洗井技术。在阐述洗井原理及工艺基础上，以HQ8勘探孔洗井及分层抽水试验应用实践为例进行分析。结果表明：封隔震荡洗井可实现大厚度含水层洗井彻底，分层抽水试验能获取无限逼近实际值的水文地质参数。该技术提高了水文地质勘探精度，尤其适用于大厚度含水层地区。Abstract: The new technology of well-flushing with parker can greatly increase the quality and efficiency of washing a well. Since the traditional washing ways are time-consuming, the results are not ideal, and the wells cannot be washed thoroughly, especially in aquifers of large thickness, the CHEGS explores a new well-flushing technology. This paper depicts the flushing principle and process, and flushing and layered pumping test of the HQ8 exploration hole are taken as a case study. The result show that the new technology can also wash a well completely in aquifers of large thickness. Through the layered pumping test the hydrogeological parameters of the actual values can be obtained. The technology may improve the precision of hydrogeological exploration, and is especially suitable for aquifers of large thickness.
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